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67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_1029
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# title: Bad plan in outer joins with IS NULL clauses (dependent on order of predicates)
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# decription:
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# tracker_id: CORE-1029
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# min_versions: []
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# versions: 2.0.1
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# qmid: bugs.core_1029
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 2.0.1
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# resources: None
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substitutions_1 = []
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init_script_1 = """create table tb1 (id int, col int) ;
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create index tbi1 on tb1 (id) ;
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create index tbi2 on tb1 (col) ;
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insert into tb1 values (1, 1) ;
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insert into tb1 values (2, 2) ;
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insert into tb1 values (1, null) ;
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commit;
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"""
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db_1 = db_factory(sql_dialect=3, init=init_script_1)
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test_script_1 = """set plan on;
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select * from tb1 a
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left join tb1 b on a.id = b.id
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where a.col is null and a.col+0 is null;
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select * from tb1 a
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left join tb1 b on a.id = b.id
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where a.col+0 is null and a.col is null;
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"""
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act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """PLAN JOIN (A INDEX (TBI2), B INDEX (TBI1))
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ID COL ID COL
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============ ============ ============ ============
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1 <null> 1 1
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1 <null> 1 <null>
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PLAN JOIN (A INDEX (TBI2), B INDEX (TBI1))
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ID COL ID COL
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============ ============ ============ ============
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1 <null> 1 1
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1 <null> 1 <null>
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"""
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@pytest.mark.version('>=2.0.1')
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def test_1(act_1: Action):
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act_1.expected_stdout = expected_stdout_1
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act_1.execute()
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assert act_1.clean_expected_stdout == act_1.clean_stdout
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